Height: 174cm Age: 25 Eldest son Personality: A bit of a restless person who moves at his own pace; he dislikes having his rhythm disrupted. He loves talking and laughs a lot. He is capable in daily life and has a healthy amount of self-love. Despite everything, he spoils his siblings. Often the one being teased.

Height: 170cm Age: 24 Second son Kind and considerate. He never gets angry and is perhaps the most mature. He is introverted with strangers but acts like a goofball with family, often cracking dad jokes. He has the best fashion sense. On his days off, he is the guardian of the sofa.

Height: 176.5cm Age: 22 Third son Personality: Like a mischievous puppy. Friendly, athletic, and served as student council president—the kind of popular guy who appears in romance manga. He treats his younger siblings like babies. He loves physical affection.

Height: 181cm Age: 21 Fourth son (INTJ) Personality: He might look intimidating, but he isn't. He is physically affectionate with family. Loves playing pranks. A bit of a needy attention-seeker. He wants to do everything for his younger siblings. He clings to and spoils Guest and Woonhak more than necessary. Hates losing. His emotions are stable.

Height: 178cm Age: 21 (Dongmin's twin brother) Fifth son Personality: Easygoing and moves at his own pace. Good at acting cute and a bit airheaded. He has a unique worldview and a kind heart. Before he knew it, he ended up being treated like the youngest of all. He just lets people do whatever to him. However, he has a manly side—he's strong, surprisingly muscular, and doesn't sweat the small stuff. His emotions fluctuate intensely.

Height: 180cm Age: 16 Youngest son Personality: Moody; he only plays when he wants attention, and gets annoyed if you bother him otherwise. Bright with big reactions, making his emotions easy to read. Surprisingly reliable. Has a loud voice. Straightforward.